Lock



4,75 July 5, 1927. E' a PRYOR l 63 5 LOCK' v Filed Sept. 20, 1926 2 Sheets-Sheet. 1

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Patented July 5, 1927.

UNITED SierlrflsA EDWARD G. PRYOR, OF- PUEBLO, COLORADQ.

Applcation 1ed September 20, 1326. Serial No. 136,564.

The device forming the subject matter of this application 1s a permutation lock,v and'A the invention aims to provide novel means whereby a bolt may be held through the` ing struinentality of a plurality of retainers, each of which isunder the control of a permutation mechanism. l

VAnother object ofthe invention is to improve the lpermutation mechanism'.

lt is within the province of the disclosure to improve generally and toY enhance the utility of devices of that type towhich the invent-ion appertains. Y

.Vith the above and other objects in'view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts aud in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention hereinA disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention. l

ln the drawings y Figure 1 shows in front elevation, a lock constructed in accordance withl the invention;

Figure 2 is an elevation wherein most of the back plate has been removed, a part of the back plate remaining in section; Figure Bis an elevation showing the rear surface of the front plate, with sundry parts of the lock in such relation with respect to each other as they will assume when the bolt is held in advanced position,

Figure 4 isy a vertical transverse section of the lock;

Figure 5 is a view similarto Figure 3 but showing the partsvas they will appear when the bolt is free for sliding 'nioveinenu parts being broken away in Figure 5,;

Figur-e. 6 is a perspective disclosing one of the bolt holders which cooperate with the tumbler disks.

The lock comprises a frame which, in Figure 1, is designated by the numeral 1. The frame 1 includes (Figure 4) a front plate 2 and a back plate 3, spaced apart. The back plate 8 is` supplied 'at its lower edge with a thick bottoni iiange 4 which 62;- tends forwardly into cont-act with the front plate 2. Between the plates 2 and 3v islocated the body.l 5 of the frame, the body 5 being in the form of a rectangular block, the

i outline of which appears to bestadvantage in, Figure2. A securing element, such as a screw 6, shown 1n Figure 4, passes through the bottom flange 4 ofthe back plate 3 and is threaded intof an, opening 16' in the front plate 2. There are holes 7, (Figure 2.) in the block-like body 5,' and these holes 7 reg: ister with holes 8 (Figure 3) in the front plate 2. rSecuring elements` 9, constructed like the screw 6, pass through the back plate 3, and through the holes 7 in the body the forward ends 'of the securing elements 9 being engaged in the holes 8 of the front plate 2. Thus, thev constituent parts of the frame 1 are held rigidly together.' .A

lnotch 14l formed in the upper edge ofithe bottom flange '4 of the back plate '8. The

locking bolt 11 is advanced and retracted lby hand, through the instrumentality of a Referring to F iguref'2, it will be noted f that' the lower edge of the body 5 isspaced' headed stud 15 mounted at its inner end in the bolt, the studbeing movable in a slot. 17 inthe front plate 2. The slot 17 is indicated in ,dotted lines in Figure 1. The slot 17 is closed by' a cover piece 1S which is carried'by the stud 15, between the head ofthe stud and the front plate l2.l Yin o rder to keep. the cover piece 18 from, swinging on the stud 1,5` Aand exposing the slot 17, the lower edge of the cover piece 18 is caused to slide in engagement with the upper ledge of'a guide strip 19 mounted on the outer surface of the front 'plate 2. The locking bolt 11 is equipped in its upper edge with a yplurality o f seats 2O and with a plurality of seats 21. The seats 21 come intoA play when the locking bolt 11 is advanced as shown in Figures 2 and 3, whereas the seats 20v` function'when the locking bolt 11 is retract-ed.V

Referring to Figure ,2, the reader will note that in the rear 'surface of the block-like body 5 there is a'recess 22, theupper enge of which is marked by` the numeral 23, be-V cause that edge of the recess has a function which will be' described hereinafter. In the forwardy surface'of the body 5 there is a chamber 24 ofsuflicient size to receive the several 'disk tumblers 2"( shown in Figure 3. The body 15, has a forward recess 25, located below .the vchamber 24, and of suiicient Vsize l yreceives the shirting ba.: 2

to receive for vertical movement, the shift* ing bai' 2S which is shown in Figure 3. llihe body or block 5 ha a plurality or vertical guide slots 26. hese guide slots entend entirely through the bloc-ly from 'liront to back, and they open throng the lower edge or the block, into the guideway 10, as disclosed in Figure 2. 'lhe guide siots coininunicate also with the Vtor rd recess 25, with the tumbler chan'iber 24, and with the recess 22. The shifting bar e rality ot upstandinv fingers 21" seen in l`igure 3, the lingers bein..v lo ated a4 Ae ends of the bar, and interie'uia e he ends ot'the bar. The shifting bar 2d 's equipped intermediate its ends u l lcpending linger 30. The lingers have a aart in the opcra tion of the locli g nie but applied with a Vplulinger 30 merely aids in gir g bar 28 a smooth inoifement i J u un on the inner surface ot' the roi The shitting bar 28 moved up by a stud 31, secured in the bar, as Eig ure 4, the stud hav front plate The vs vertically elongateti slot i3 retained on the stud 31 bv Uuice strio 35 (Wie/rre 1 oi b..-.l f aibeiror/ i 2, holds the cover piece itroin swinging on the stud 31 and keeps the cover piecel in tapered at their upper ends, as shown at ff .ai .s1 ii il itx, L 'i Op 3e rlhe lower ei is or ne bo holdeis )o are received in the seats 21 e 2) oi; the locking bolt 11, to hold tb ne' bolt advanced, and when the loc i. is retracted, the lower ends of t" e bolt holders 36 are receive. in the seats or the bolt 11. Each of the bolt holdem ,plied in its forward surface witl ,c which holders 3G, at the uppe 88, to raise the bolt ho ders when t ing bar is raised by means head 32.

rlhere are depressions 39 in the outer surtace of the iront plate 2. Dials 40 are inscribed upon the trent plate 2, about the depressions 39. rilumbler shafts 41 are j ournaled in the body 5, concentrically with respect to the depressions 39. VEhe tumbler shafts 41 are provided at their outer ends with heads 42. rthe heads 42 retain the permutation disks 43 in the depressions 3). yihe permutation disks 43 are supplied with indices 44 adapted to cooperate with the dials 40. rlhe tumbler shafts 41 are supplied with projections 45 adapted' to be received in 29, the fingers 29 cooneratiig i f boltnotches 46 in the permutation disks 43. The tumblers 27 (hereinafter mentioned) are mounted on the tumbler shafts 41 and have notches 47 at their centers, the notches being adapted to receive projecting pins 48 on the tumbler shafts. Here note that'many permutations may be made, because the projections 45 on the tumbler shafts V41 may be engaged in any of the notches 46 oi the permutation disks 43, and because any ot the projections 48 on the tumbler shafts 41 may be engaged in any ot the notches 4'? of the tumblers 2?. Each of the tumblers 27 has many shallow notches 49 and one deep notch 50. The shallow notches 49 are dummy notches, in that when the tapered ends of bolt holders 86 are received in the notches 49, the lower ends of the bolt holders still will be engaged with the seats 2O Vor 21 of the bolt 11, and the boltcannot be thrown. The notches 49 are intended to deceive a person who is attempting to crack t-he lock by touch or sound. When, however, the bolt holders 35 move out o1 the seats 2O or 21 in the bolt 11, the ends 37 ot the bolt holders are received in the deep notches 50 of the tumblers, and the bolt 11 canlbe shot. ihe holes 51 iii the plate 2, through which the tumbler shafts 41 pass, are large enough to accommodate the pins 48, so that the tumbler shatts can be moved to the right in Figure 4, endwise, thereby permitting both the 'permutation disks 43 and the tumblers 2'? to be adjusted circumferentially Iot' the tumbler shafts to change the combination. A novel means'is provided :for holding the tumbler' shafts 41 for rotation in the body 5 ot the lock, and inthe position delineated in Figure 4 ot the drawings. Having this consideration in mind, the tumbler shafts 41 are supplied near to their rear ends with circumferential grooves 52 defining reduced necks 58. A retaining bar 54 is located in the rear recess 22 of the body 5 and has in its lower edge notches which receive the reduced necks 53 oi' the tumbler shafts 41.

The retaining bar 54 obviously prevents theY back plate 3 is taken oft, the locking piecek 55 may be picked out of the recess 22, it being possible, then, to raise the retaining bar 54 out of engagement with the rear ends of the tumbler shafts 41, .so as to permit cir cumterential adjustment ot' vthe permutation disks 43, and ol the tumblers 27, to changev the combination.

ln practical operation, the tumblers 27' lie are rotated by means of the shafts 41 and the heads 42 of the shafts, until the indices 44 on the disks 43 cooperate with the proper numerals of the dials 40, the deeperl notches of the tumblers '27 being brought immediately above the tapered ends 37 of the bolt holders 36. All of the holders 36 then can be raised out of engagement with the.

seats 20, or out of engagement with the seats 21, in the bolt l1, this raising of the bolt holders 36 being brought about yby lifting the shifting bar 28 through the instrumentality of the head 32, the ngers 29 of the bar 28 engaging the bolt holders 36 at the upper ends of the recesses 38 (Figures 6 and 4). Vihen the bolt holders 36 `are disengaged from the bolt 1l, as aforesaid, the bolt may be moved endwise by means of the stud 15. Tfi/'hen the bolt is in the advanced position s hown in Figure 3 the bolt holders 36 may be permitted to move downwardly, along with the shifting bar 28, the lower ends of the bolt holders being received in the seats 2l of the locking bolt l1, to hold r the locking bolt advanced. Then, by giving one or more of the tumbler' shafts 21 a slight twist, the tumblers 27 will be rotated, and the deeper notches 50 will beso disposed with respect to the tapered ends of the bolt holders 36, that the bolt holders cannot be raised out of engagement with the seats 2l in the locking bolt l1.

The locking bolt ll is shown in Figure 2 as projecting beyond the left-hand end of the 'frame of the lock. The bolt l1, however, is capable of end-for-end reversal in the guideway 10, and may be so mounted that, when it is advanced, it will project beyond the right-hand end of the lock frame in Figure 2.

Vilhat is claimed is l. In a device of the class described, a frame, a locking bolt mounted for straightline rec-iprocation on the frame, a bolt holder provided intermediate its ends with a recess, the bolt holder having straightline movement on the frame, in a direction at right angles to the line of reciprocation of the bolt, into and out of engagement at one end, with the bolt, a tumbler journaled on the frame and cooperating with the other end of the bolt holder to maintain the bolt holder in engagement with the bolt, the tumbler having an opening receiving said other end of the bolt holder to permit the first-specified end of the bolt holder to be disengaged from the bolt when the bolt holder is moved in one direction, and a shifting member mounted to move on the frame, the shifting member being movable in the recess of the bolt holder to move the bolt holder in said direction.

2. In a device of the class described, a frame, a locking bolt mounted for straightline reciprocation on the frame, a plurality of bolt holders having parallel straight-line movement on the frame, in a direction at right angles to the line of reciprocation of the bolt, into and out of engagement with the bolt, tumblers journaled on the frame and cooperating with the bolt holders to maintain the bolt holders engaged with the bolt, the tumblers having openings in which one end of the bolt holders is adapted to be received, when the bolt holders are moved in one direction, thereby to disengage the opposite end of the bolt holders from the bolt, and a shifting member movable on the frame and engaging all of the bolt holders to move them in said direction, the bolt holders being` movable with respect to the v shifting member.

3. In a device of the class described, a frame, a tumbler shaft journaled on the frame, a tumbler on the tumbler shaft, locking mechanism cooperating with the tumbler, the tumbler shaft being provided with a circumferential groove, a retaining member engaged in the groove, and a locking piece interposed between the retaining member and a part of the frame, and constituting means for holding the retaining member engaged in the groove.

4. In a device of the class described, a frame, a tumbler shaft journaled inthe frame, a tumbler carried by the tumbler shaft, locking mechanism cooperating with the tumbler, the tumbler shaft being lprovided with a reduced neck, a retainer having a notch receiving the neck, and a locking piece interposed between the retainer and a part of the frame and constituting means for holding the retainer engaged with the neck.

In testimony that I claim the foregoing as my own,l I have hereto aflixed my signature.

EDWARD G. PRYOR. 

